GE Data Sheet QBDW033A0B Barracuda* Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output RoHS Compliant Features Compliant to RoHS II EU "Directive 2011/65/EU (-Z versions) Compliant to REACH Directive (EC) No 1907/2006 High and flat efficiency profile >95.3% at 12Vdc, 30% to 100% rated output Wide input voltage range: 36-75Vdc Delivers up to 33Adc output current Remote sense and output voltage trim Fully very tightly regulated output voltage Output voltage adjust: 8.1Vdc to 13.2Vdc Low output ripple and noise Industry standard, DOSA compliant, Quarter brick: 58.4 mm x 36.8 mm x 11.7 mm (2.30 in x 1.45 in x 0.46 in) Distributed power architectures Constant switching frequency Positive remote On/Off logic Intermediate bus voltage applications Output over current/voltage protection Servers and storage applications Digital interface with PMBusTM Rev.1.2 compliance^ Over temperature protection Wide operating temperature range (-40C to 85C) ANSI/ UL# 60950-1-2011 Recognized, CAN/CSA C22.2 No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC 60950-1:2005 (2nd edition) + A1:2009 and EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011, and VDE 0805-1 Licensed CE mark 2006/96/EC directives Meets the voltage and current requirements for ETSI 300132-2 and complies with and licensed for Basic insulation rating per EN60950-1 2250 Vdc Isolation tested in compliance with IEEE 802.3 PoE standards Applications Networking equipment including Power over Ethernet (PoE) Fan assemblies other systems requiring a tightly regulated output voltage Options Negative Remote On/Off logic (1=option code, factory preferred) Auto-restart after fault shutdown (4=option code, factory preferred) Base plate option (-H=option code) Passive Droop Load Sharing (-P=option code) ISO** 9001 and ISO14001 certified manufacturing facilities Description The QBDW033A0B Barracuda series of dc-dc converters are a new generation of DC/DC power modules designed to support 9.6 -12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) converters, as well as other application requiring a tightly regulated output voltage. The QBDW033A0B series operate from an input voltage range of 36 to 75Vdc and provide up to 33A output current at output voltages from 8.1Vdc to 12Vdc, and 400W output power from output voltages of 12.1Vdc to 13.2Vdc in a DOSA standard quarter brick. The converter incorporates digital control, synchronous rectification technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency exceeding 96% peak at 12Vdc output. This leads to lower power dissipations such that for many applications a heat sink is not required. Standard features include output voltage trim, remote sense, on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout, power good signal and PMBus interface. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering. * Trademark of General Electric Company ^ PMBus name and logo are registered trademarks of SMIF, Inc. # UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed. IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated. ** ISO is a registered trademark of the International Organization of Standards. May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 1 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the Data Sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Device Symbol Min VIN -0.3 Max Unit 75 Vdc Input Voltage* Continuous Operating transient 100mS Non- operating continuous 100 Vdc VIN 80 100 Vdc All TA -40 85 C Logic Pin Voltage (to SIG_GND or VO(-)) TRIM/C1, C2, ADDR0, ADDR1, CLK, DATA, SMBALERT All Vpin -0.3 3.6 Vdc Storage Temperature All Tstg -55 125 C I/O Isolation Voltage (100% factory Hi-Pot tested) All 2250 * Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level. Vdc Operating Ambient Temperature (See Thermal Considerations section) Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Symbol Min Typ Max Unit Operating Input Voltage Device VIN 36 48 75 Vdc Maximum Input Current (VIN=0V to 75V, IO=IO, max) IIN,max - - 12 Adc Input No Load Current (VIN = VIN, nom, IO = 0, module enabled) Input Stand-by Current (VIN = VIN, nom, module disabled) External Input Capacitance All IIN,No load All IIN,stand-by All 80 mA 22 mA 100 - - F - - 1 A2s All - 350 - mArms Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12H source impedance; VIN= 48V, IO= IOmax ; see Figure 10) All - 40 - mAp-p Input Ripple Rejection (120Hz) All - 25 - dB Inrush Transient All I2t Input Terminal Ripple Current (Measured at module input pin with maximum specified input capacitance and 500uH inductance between voltage source and input capacitance) 5Hz to 20MHz, VIN= 48V, IO= IOmax CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 30 A (see Safety Considerations section). Based on the information provided in this Data Sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer's Data Sheet for further information. May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 2 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Electrical Specifications (continued) Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Output Voltage Set-point (Default) (VIN=VIN,nom, IO=16.5A, TA =25C) (Adjustable via PMBus) Output Voltage Variation from Default (Over all operating input voltage (40V to 75V), resistive load, and temperature conditions until end of life) Output Voltage (VIN=36V, TA = 25C) Device Symbol Min Typ Max Unit All VO, set 11.97 12.00 12.03 Vdc VO 11.76 12.24 Vdc VO 11.63 12.37 Vdc VO 11.00 Vdc 0.2 % VO, set 0.2 % VO, set All w/o P -P Option All Output Regulation [VIN, min = 40V] Line (VIN= VIN, min to VIN, max) Load (IO=IO, min to IO, max) Load (IO=IO, min to IO, max), Intentional Droop All All w/o P -P 0.50 O ti All RMS (5Hz to 20MHz bandwidth) All Peak-to-Peak (5Hz to 20MHz bandwidth) All Temperature (TA = -40C to +85C) Vdc 2 70 mVrms 200 mVpk-pk 10,000 F 33 Adc Adc % VO, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) External Output Capacitance For CO >5000uF, IO must be < 50% IO, max during Trise. Output Current VOUT_OC_FAULT_LIMIT (Default) (Adjustable via PMBus) Efficiency VIN=VIN, nom, TA=25C IO=100% IO, max, VO= VO,set IO=40% IO, max to 75% IO, max , VO= VO,set All CO, max 0 All IO 0 All IO,lim All All 95.3 95.8 % % fsw 150 kHz Switching Frequency Dynamic Load Response dIO/dt=1A/10s; Vin=Vin,nom; TA=25C; (Tested with a 1.0F ceramic, a 10F tantalum, and 470F capacitor and across the load.) Load Change from IO = 50% to 75% of IO,max: Peak Deviation Settling Time (VO <10% peak deviation) Load Change from IO = 75% to 50% of IO,max: Peak Deviation Settling Time (VO <10% peak deviation) All All 40 Vpk ts __ 500 700 __ mVpk s Vpk ts __ __ 500 700 __ mVpk s General Specifications Parameter Calculated Reliability Based upon Telcordia SR-332 Issue 2: Method I, Case 3, (IO=80%IO, max, TA=40C, Airflow = 200 LFM), 90% confidence Weight - Open Frame Device Symbol Typ All MTBF 3,108,685 Hours All FIT 321.7 109/Hours 47.4 (1.67) g (oz.) 66.4 (2.34) g (oz.) Weight - with Base plate option May 9, 2013 (c)2012 General Electric Company. All rights reserved. Unit Page 3 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Isolation Specifications Parameter Symbol Min Typ Max Isolation Capacitance Ciso 1000 Unit pF Isolation Resistance Riso 10 M Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit All All All Ion/off Von/off Von/off 280 -0.3 2.0 310 0.8 14.5 A Vdc Vdc All Ion/off 10 A All Von/off 14.5 Vdc 150 ms Remote On/Off Signal Interface (VIN=VIN, min to VIN, max , Signal referenced to VIN- terminal) Negative Logic: device code suffix "1" Logic Low = module On, Logic High = module Off Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On Logic Low Specification On/Off Thresholds: Remote On/Off Current - Logic Low (Vin =100V) Logic Low Voltage Logic High Voltage - (Typ = Open Collector) Logic High maximum allowable leakage current (Von/off = 2.0V) Maximum voltage allowed on On/Off pin TON_DELAY and TON_RISE (Adjustable via PMBus) Tdelay=Time until VO = 10% of VO,set from either application of Vin with Remote On/Off set to On (Enable with Vin); or operation of Remote On/Off from Off to On with Vin already applied for at least 150 milliseconds (Enable with on/off). (IO=IO, max) * Increased Tdelay due to startup for parallel modules. Trise=Time for VO to rise from 10% to 90% of VO,set, For CO >5000uF, IO must be < 50% IO, max during Trise. * Increased Trise when Vo exists at startup for parallel modules. Load Sharing Current Balance (difference in output current across all modules with outputs in parallel, no load to full load) Remote Sense Range All w/o -P Tdelay Enable with Vin All w/o-P Tdelay, Enable with , 10 ms w/ -P Tdelay, Enable with Vin 180* ms w/ -P Tdelay, Enable with 40* ms All w/o P Trise 15 ms w/ -P Trise 300* ms -P Option Idiff 3 A on/off on/off All VSense 0.5 Vdc VOUT_COMMAND (Adjustable via PMBus) All VO, set All VO,limit Vdc OT_FAULT_LIMIT (Adjustable via PMBus) Input Undervoltage Lockout (Adjustable via PMBus) All Tref 140 13.2 VO,set+5.0V Vdc VOUT_OV_FAULT_LIMIT (Adjustable via PMBus) 8.1 VO,set+2.5V 33 31 35 33 36 34 Vdc Vdc 85 Vdc 78 Vdc 150 15 mA VIN_ON VIN_OFF Input Overvoltage Lockout (Adjustable via PMBus) Turn-off Threshold [VIN_OV_FAULT_LIMIT] Turn-on Threshold (follows VIN_OV_FAULT_LIMIT -7V) Pull down resistance of PGOOD pin Sink current capability into PGOOD pin (VPG=2.2V) May 9, 2013 All All (c)2012 General Electric Company. All rights reserved. C Page 4 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Digital Interface Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Conditions Symbol Min VIH VIL 2.1 Typ Max Unit 3.6 0.8 V V PMBus Signal Interface Characteristics Input High Voltage (CLK, DATA) Input Low Voltage (CLK, DATA) Input high level current (CLK, DATA) IIH -10 10 A Input low level current (CLK, DATA) IIL -10 10 A 0.4 V 10 A Output Low Voltage (CLK, DATA, SMBALERT#) Output high level open drain leakage current (DATA, SMBALERT#) Pin capacitance PMBus Operating frequency range (* 5-10 kHz to accommodate hosts not supporting clock stretching) IOUT=2mA VOL VOUT=3.6V IOH 0 CO Slave Mode 0.7 pF FPMB 5* 400 kHz Output current reading range IOUT(RNG) 1.6500 63.937 A Output current reading blanking IOUT(BNK) 0 1.5875 A Measurement System Characteristics Output current reading resolution IOUT(RES) Output current reading accuracy Output current reading accuracy (absolute difference between actual and reported values) VOUT reading range 62.5 16.5A< Iout <33.0A IOUT(ACC) -5.0 1.65A< Iout <16.5A IOUT(ACC) VOUT(RNG) % -1.7 2.5 A 0 15.999 7 VOUT(RES) VOUT reading accuracy VOUT(ACC) -2.0 VIN reading range VIN(RNG) 0 VIN reading resolution VIN(RES) VIN reading accuracy VIN(ACC) Temperature reading resolution T(RES) Temperature reading accuracy T(ACC) May 9, 2013 (c)2012 General Electric Company. All rights reserved. mA 3.0 VOUT reading resolution -1.4 0.244 0.6 125 -4.0 0.8 2.0 127.87 5 4.0 0.25 -5.0 V mV % V mV % C 5.0 % Page 5 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Characteristic Curves INPUT CURRENT, Ii (A) EFFCIENCY, (%) The following figures provide typical characteristics for the QBDW033A0B (12V, 33A) at 25C. The figures are identical for either positive or negative Remote On/Off logic. INPUT VOLTAGE, VO (V) OUTPUT CURRENT, IO (A) Figure 2. Typical Converter Efficiency vs. Output Current. TIME, t (2s/div) INPUT VOLTAGE VIN(V) (20V/div) OUTPUT VOLTAGE VO (V) (5V/div) OUTPUT VOLTAG VO (V) (5V/div) TIME, t (20 ms/div) Figure 5. Typical Start-Up Using Vin with Remote On/Off enabled, negative logic version shown. May 9, 2013 TIME, t (500 s/div) Figure 4. Typical Transient Response to 0.1A/s Step Change in Load from 50% to 75% to 50% of Full Load, Co=470F and 48 Vdc Input. On/Off VOLTAGE VON/OFF (V)(2V/div) Figure 3. Typical Output Ripple and Noise, Io = Io,max. OUTPUT CURRENT IO (A) (10A/div) OUTPUT VOLTAGE, VO (V) (50mV/div) OUTPUT VOLTAGE VO (V) (200mV/div) Figure 1. Typical Input Characteristic. TIME, t (5 ms/div) Figure 6. Typical Start-Up Using Remote On/Off with Vin applied, negative logic version shown. (c)2012 General Electric Company. All rights reserved. Page 6 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) Characteristic Curves (continued) INPUT VOLTAGE, Vin (V) OUTPUT CURRENT, IO (A) Figure 8. Typical Output Voltage Regulation vs. Output Current. OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) Figure 7. Typical Output Voltage Regulation vs. Input Voltage. INPUT VOLTAGE, Vin (V) Figure 9. Typical Output Voltage Regulation vs. Input Voltage for the -P Version. OUTPUT CURRENT, IO (A) Figure 10. Typical Output Voltage Regulation vs. Output Current for the -P Version. . May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 7 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Test Configurations Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 10, a 100F electrolytic capacitor, Cin, (ESR<0.7 at 100kHz), mounted close to the power module helps ensure the stability of the unit. If the module is subjected to rapid on/off cycles, a 330F input capacitor is required. Consult the factory for further application guidelines. Safety Considerations Note: Measure input reflected-ripple current with a simulated source inductance (LTEST) of 12 H. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 11. Input Reflected Ripple Current Test Setup. For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL60950-1 2nd Ed., CSA C22.2 No. 60950-1 2nd Ed., and VDE0805-1 EN60950-1 2nd Ed. If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75Vdc), for the module's output to be considered as meeting the requirements for safety extra-low voltage (SELV), all of the following must be true: Note: Use a 1.0 F ceramic capacitor and a 10 F aluminum or The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. One VIN pin and one VOUT pin are to be grounded, or both the input and output pins are to be kept floating. The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not appear at the module's output. tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. Figure 12. Output Ripple and Noise Test Setup. CONTACT AND DISTRIBUTION LOSSES VI(+) VO1 IO II LOAD SUPPLY VI(-) VO2 Note: Do not ground either of the input pins of the module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. The power module has safety extra-low voltage (SELV) outputs when all inputs are SELV. The input to these units is to be provided with a maximum 30 A fast-acting (or time-delay) fuse in the unearthed lead. CONTACT RESISTANCE Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. The power module has internally generated voltages exceeding safety extra-low voltage. Consideration should be taken to restrict operator accessibility. Figure 13. Output Voltage and Efficiency Test Setup. May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 8 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Feature Descriptions PMBus interface. A minimum 2V hysteresis between VIN_ON and VIN_OFF is required. Overcurrent Protection To provide protection in a fault output overload condition, the QBDW033A0B module is equipped with internal currentlimiting circuitry and can endure current limiting continuously. If the overcurrent condition causes the output voltage to fall below 4.0V, the module will shut down. The module is factory default configured for auto-restart operation. The auto-restart feature continually attempts to restore the operation until fault condition is cleared. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overcurrent condition is corrected. The IOUT_OC_WARN threshold level, IOUT_OC_FAULT threshold level, and IOUT_OC_FAULT_RESPONSE can be reconfigured via the PMBus interface. If the FAULT_RESPONSE is reconfigured to remain latched off following an overcurrent shutdown, the overcurrent latch is reset by either cycling the input power, or by toggling the on/off pin for one millisecond. Output Overvoltage Protection The module contains circuitry to detect and respond to output overvoltage conditions. If the overvoltage condition causes the output voltage to rise above the limit in the Specifications Table, the module will shut down. The QBDW033A0B module is factory default configured for autorestart operation. The auto-restart feature continually attempts to restore the operation until fault condition is cleared. If the output overvoltage condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overvoltage condition is corrected. The VOUT_OV_FAULT threshold level and VOUT_OV_FAULT _RESPONSE can be reconfigured via the PMBus interface. If the FAULT _RESPONSE is reconfigured to remain latched off following an overvoltage shutdown, the overvoltage latch is reset by either cycling the input power, or by toggling the on/off pin for one millisecond. Overtemperature Protection The modules feature an overtemperature protection circuit to safeguard against thermal damage. The circuit shuts down the module when the default maximum device reference temperature is exceeded. The module is factory default configured to automatically restart once the reference temperature cools by ~25C. The OT_WARNING and OT_FAULT threshold levels and OT_FAULT_RESPONSE can be reconfigured via the PMBus interface. If the FAULT _RESPONSE is reconfigured to remain latched off following an overtemperature shutdown, the overtemperature latch is reset by either cycling the input power or by toggling the on/off pin for one millisecond. Input Under Voltage Lockout Input Over Voltage Lockout The QBDW033A0B module contains circuitry to detect and respond to input overvoltage conditions. If the overvoltage condition causes the input voltage to rise above the limit in the Specifications Table, the module will shut down. The module is factory default configured for auto-restart operation. The auto-restart feature continually monitors the input voltage and will restart the module when the level falls 7V below the VIN_OV_FAULT level. The VIN_OV_FAULT threshold level can be reconfigured via the PMBus interface. Remote On/Off (i) The module contains a standard on/off control circuit reference to the VIN(-) terminal. Two factory configured remote on/off logic options are available. Positive logic remote on/off turns the module on during a logic-high voltage on the ON/OFF pin, and off during a logic LO. Negative logic remote on/off turns the module off during a logic HI, and on during a logic LO. Negative logic, device code suffix "1," is the factory-preferred configuration. The On/Off circuit is powered from an internal bias supply, derived from the input voltage terminals. To turn the power module on and off, the user must supply a switch to control the voltage between the On/Off terminal and the VIN(-) terminal (Von/off). The switch can be an open collector or equivalent (see Figure 14). A logic LO is Von/off = -0.3V to 0.8V. The typical Ion/off during a logic LO (Vin=48V, On/Off Terminal=0.3V) is 147A. The switch should maintain a logiclow voltage while sinking 310A. During a logic HI, the maximum Von/off generated by the power module is 8.2V. The maximum allowable leakage current of the switch at Von/off = 2.0V is 10A. If using an external voltage source, the maximum voltage Von/off on the pin is 14.5V with respect to the VIN(-) terminal. If not using the remote on/off feature, perform one of the following to turn the unit on: For negative logic, short ON/OFF pin to VIN(-). For positive logic: leave ON/OFF pin open. Figure 14. Remote On/Off Implementation. When Vin exceeds VIN_ON, the module output is enabled, when Vin falls below VIN_OFF, the module output is disabled. VIN_ON and VIN_OFF can be reconfigured via the May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 9 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Feature Descriptions (continued) Load Sharing maximum rated power (Maximum rated power = Vo,set x Io,max). For higher power requirements, the QBDW033A0 power module offers an optional feature for parallel operation (-P Option code). This feature provides a precise forced output voltage load regulation droop characteristic. The output set point and droop slope are factory calibrated to insure optimum matching of multiple modules' load regulation characteristics. To implement load sharing, the following requirements should be followed: The VOUT(+) and VOUT(-) pins of all parallel modules must be connected together. Balance the trace resistance for each module's path to the output power planes, to insure best load sharing and operating temperature balance. VIN must remain between 40Vdc and 75Vdc for droop sharing to be functional. It is permissible to use a common Remote On/Off signal to start all modules in parallel. These modules contain means to block reverse current flow upon start-up, when output voltage is present from other parallel modules, thus eliminating the requirement for external output ORing devices. Modules with the -P option will self determine the presence of voltage on the output from other operating modules, and automatically increase its Turn On delay, Tdelay, as specified in the Feature Specifications Table. When parallel modules startup into a pre-biased output, e.g. partially discharged output capacitance, the Trise is automatically increased, as specified in the Feature Specifications Table, to insure graceful startup. Insure that the load is <50% IO,MAX (for a single module) until all parallel modules have started (load full start > module Tdelay time max + Trise time). If fault tolerance is desired in parallel applications, output ORing devices should be used to prevent a single module failure from collapsing the load bus. Remote Sense Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (See Figure 15). The SENSE(-) pin should be always connected to VO(-).The voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table: [VO(+) - VO(-)] - [SENSE(+) ] 0.5 V Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current, would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the May 9, 2013 Figure 15. Circuit Configuration for remote sense. Configurable Control Pins The QBDW033A0B contains two configurable control pins, T/C1 and C2, referenced to the module secondary SIG_GND. See Mechanical Views for pin locations. The following table list the default factory configurations for the functions assigned to these pins. Additional configurations can be accomplished via the PMBus command, MFR_CPIN_ARA_CONFIG. Following the table, there is a feature description for each function. Pin Designation/Function T/C1 On/Off (O) Trim Trim On/Off (O) C2 Power Good On/Off (O) Power Good Power Good Module Code w/o -P w/o -P w/o -P with -P Configuration Factory Default Via PMBus Via PMBus Factory Default Remote On/Off(o) The module contains an additional remote on/off control input On/Off(o), via either the T/C1 or C2 pin, reference to the VO(-) terminal. The factory default configuration is set to ignore this input, unless activated by the PMBus command, MFR_ CPIN_ON_OFF_CONFIG. This command is also used to configure the logic for the On/Off(o) pin. Positive logic remote on/off turns the module on during a logic-high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a logic high, and on during a logic low. The On/Off(o) circuit is powered from an internal bias supply, referenced to SIG_GND. To turn the power module on and off, the user must supply a switch to control the voltage between the On/Off (o) terminal and the VO(-) terminal (Von/off(o)). The switch can be an open collector or equivalent (see Figure 13). A logic low is Von/off(o) = -0.3V to 0.8V. The typical Ion/off(o) during a logic low is 330A. The switch should maintain a logic-low voltage while sinking 250A. During a logic high, the maximum Von/off(o) generated by the power module is 3.3V. The maximum allowable leakage current of the switch at Von/off(o) = 2.0V is 130A. If using an external voltage source, the maximum voltage Von/off on the pin is 3.3V with respect to the Vi(-) terminal. If not using the Remote On/Off(o) feature, the pin may be left N/C. (c)2012 General Electric Company. All rights reserved. Page 10 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output % 20 Feature Descriptions (continued) Power Good, PG The QBDW033A0B module provides a Power Good (PG) feature, which compares the module's output voltage to the module's POWER_GOOD_ON and POWER_GOOD_OFF values. These values are adjustable via PMBus. PG is asserted when the module's output voltage is above the POWER_GOOD_ON value, and PG is de-asserted if any condition such as overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going below the POWER_GOOD_OFF value. The PG signal, provided on pin C2, is implemented with an open-drain node, pulled up via a 10k resistor to 3.3V internally. For Positive Logic PG (default), the PG signal is HI, when PG is asserted, and LO, when the PG is de-asserted. For Negative Logic PG, the PG signal is LO, when PG is asserted, and HI, when the PG is de-asserted. The PMBus command MFR_PGOOD _POLARITY is used to set the logic polarity of the signal. If not using the Power Good feature, the pin may be left N/C. Trim, Output Voltage Programming Trimming allows the output voltage set point to be increased or decreased; this is accomplished by connecting an external resistor between the TRIM pin and either the VO(+) pin or the VO(-) pin. V O(+) Rtrim-up LOAD T/C1 Rtrim-down QBDW033A0B V O(-) Figure 16. Circuit Configuration to Trim Output Voltage. 511 Rtrim down 10.22 20 R trim down 15 . 3 k Connecting an external resistor (Rtrim-up) between the T/C1 pin and the VO(+) (or Sense (+)) pin increases the output voltage set point. The following equations determine the required external resistor value to obtain a percentage output voltage change of %: 5 . 11 12 . 0V (100 %) 511 R trim up 10 . 22 1 . 225 % % Where % V desired 12 . 0V 100 12 . 0V For example, to trim-up the output voltage of the module by 5% to 12.6V, Rtrim-up is calculated is as follows: % 5 5 . 11 12 . 0 (100 5 ) 511 10 . 22 R trim up 1 . 225 5 5 Rtrim up 938 .8 The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage protection value shown in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power = VO,set x IO,max). Connecting an external resistor (Rtrim-down) between the T/C1 pin and the Vo(-) (or Sense(-)) pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be 1.0%. The following equation determines the required external resistor value to obtain a percentage output voltage change of %. 511 10 . 22 R trim down % Where % 12 . 0V V desired 100 12 . 0V For example, to trim-down the output voltage of the module by 20% to 9.6V, Rtrim-down is calculated as follows: May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 11 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Feature Descriptions (continued) Thermal Considerations The thermal data presented here is based on physical measurements taken in a wind tunnel, using automated thermo-couple instrumentation to monitor key component temperatures: FETs, diodes, control ICs, magnetic cores, ceramic capacitors, opto-isolators, and module pwb conductors, while controlling the ambient airflow rate and temperature. For a given airflow and ambient temperature, the module output power is increased, until one (or more) of the components reaches its maximum derated operating temperature, as defined in IPC-9592B. This procedure is then repeated for a different airflow or ambient temperature until a family of module output derating curves is obtained. . Figure 17. Location of the thermal reference temperature TH. Figure 18. Location of the thermal reference temperature TH3 for Baseplate module. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table. The power modules operate in a variety of thermal environments and sufficient cooling should be provided to help ensure reliable operation. Thermal considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. Heat-dissipating components are mounted on the top side of the module. Heat is removed by conduction, convection and radiation to the surrounding environment. Proper cooling can be verified by measuring the thermal reference temperature (TH1 or TH2). Peak temperature occurs at the position indicated in Figure 17 and 18. For reliable operation this temperature should not exceed TH1=125C or TH2=105C. For extremely high reliability you can limit this temperature to a lower value. May 9, 2013 Please refer to the Application Note "Thermal Characterization Process For Open-Frame Board-Mounted Power Modules" for a detailed discussion of thermal aspects including maximum device temperatures. Heat Transfer via Convection Increased airflow over the module enhances the heat transfer via convection. The thermal derating of figure 1923 shows the maximum output current that can be delivered by each module in the indicated orientation without exceeding the maximum THx temperature versus local ambient temperature (TA) for several air flow conditions. The use of Figure 19 is shown in the following example: Example What is the minimum airflow necessary for a QBDW033A0B operating at VI = 48 V, an output current of 20A, and a maximum ambient temperature of 60 C in transverse orientation. Solution: Given: Vin= 48V, IO = 20A, TA = 60 C Determine required airflow velocity (Use Figure 19): Velocity = 0.5m/s (100 LFM) or greater. (c)2012 General Electric Company. All rights reserved. Page 12 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Thermal Considerations (continued) LOCAL AMBIENT TEMPERATURE, TA (C) Figure 22. Output Current Derating for the Base plate QBVW033A0B-H with 0.5" heatsink in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) LOCAL AMBIENT TEMPERATURE, TA (C) Figure 19. Output Current Derating for the Open Frame QBVW033A0B in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V. OUTPUT CURRENT, IO (A) LOCAL AMBIENT TEMPERATURE, TA (C) Figure 23. Output Current Derating for the Base plate QBVW033A0B-H with 1.0" heatsink in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V. OUTPUT CURRENT, IO (A) LOCAL AMBIENT TEMPERATURE, TA (C) Figure 20. Output Current Derating for the Base plate QBVW033A0B-H in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V. LOCAL AMBIENT TEMPERATURE, TA (C) Figure 21. Output Current Derating for the Base plate QBVW033A0B-H with 0.25" heatsink in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V COLD WALL TEMPERATURE, TC (C) Figure 24. Output Current Derating for the Base Plate QBVW033A0B-H in a Cold wall application; Local Internal Air Temperature near module=80C, VIN = 48V, VOUT setting anywhere from 6.0V to 12.0V. May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 13 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Layout Considerations The QBDW033A0B power module series are low profile in order to be used in fine pitch system card architectures. As such, component clearance between the bottom of the power module and the mounting board is limited. Avoid placing copper areas on the outer layer directly underneath the power module. Also avoid placing via interconnects underneath the power module. Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure 24. For additional layout guide-lines, refer to FLTR100V10 Data Sheet. Through-Hole Lead-Free Soldering Information The RoHS-compliant, Z version, through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. The non-Z version products use lead-tin (Pb/Sn) solder and RoHS-compliant components. Both version modules are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant, pure tin finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. Not all RoHS-compliant throughhole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your GE representative for more details. Reflow Lead-Free Soldering Information The RoHS-compliant through-hole products can be processed with the following paste-through-hole Pb or Pbfree reflow process. Max. sustain temperature : 245C (J-STD-020C Table 4-2: Packaging Thickness>=2.5mm / Volume > 2000mm3), Peak temperature over 245C is not suggested due to the potential reliability risk of components under continuous high-temperature. Min. sustain duration above 217C : 90 seconds Min. sustain duration above 180C : 150 seconds Max. heat up rate: 3C/sec Max. cool down rate: 4C/sec In compliance with JEDEC J-STD-020C spec for 2 times reflow requirement. Pb-free Reflow Profile BMP module will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. BMP will comply with JEDEC J-STD-020C specification for 3 times reflow requirement. The suggested May 9, 2013 Figure 24. Recommended linear reflow profile using Sn/Ag/Cu solder. MSL Rating The QBDW033A0B modules have a MSL rating of 2a. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of 30C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40 C, < 90% relative humidity. Post Solder Cleaning and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to GE Board Mounted Power Modules: Soldering and Cleaning Application Note (AP01-056EPS). EMC Considerations The circuit and plots in Figure 25 shows a suggested configuration to meet the conducted emission limits of EN55022 Class A. For further information on designing for EMC compliance, please refer to the FLT012A0Z data sheet. (c)2012 General Electric Company. All rights reserved. Page 14 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Figure 25. EMC Consideration Packaging Details All versions of the QBDW033A0B are supplied as standard in the plastic trays shown in Figure 26. Each tray contains a total of 12 power modules. The trays are self-stacking and each shipping box for the QBDW033A0B module contains 2 full trays plus one empty hold-down tray giving a total number of 24 power modules. Open Frame Module Tray Figure 26. QBDW033 Packaging Tray May 9, 2013 Tray Specification Material Max surface resistivity Color Capacity Min order quantity PET (1mm) 109 -1011/PET Clear 12 power modules 24 pcs (1 box of 2 full trays + 1 empty top tray) Base Plate Module Tray (c)2012 General Electric Company. All rights reserved. Page 15 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Digital Feature Descriptions PMBus Interface Capability The QBDW033A0B series is equipped with a digital PMBus interface to allow the module to be configured, and communicate with system controllers. Detailed timing and electrical characteristics of the PMBus can be found in the PMB Power Management Protocol Specification, Part 1, revision 1.2, available at http://pmbus.org. The QBDW033A0B supports both the 100kHz and 400kHz bus timing requirements. The QBDW033A0B shall stretch the clock, as long as it does not exceed the maximum clock LO period of 35ms. The QBDW033A0B will check the Packet Error Checking scheme (PEC) byte, if provided by the PMBus master, and include a PEC byte in all responses to the master. However, the QBDW033A0B does not require a PEC byte from the PMBus master. The QBDW033A0B supports a subset of the commands in the PMBus 1.2 specification. Most all of the controller parameters can be programmed using the PMBus and stored as defaults for later use. All commands that require data input or output use the linear format. The exponent of the data words is fixed at a reasonable value for the command and altering the exponent is not supported. Direct format data input or output is not supported by the QBDW033A0B. The supported commands are described in greater detail below. The QBDW033A0B contains non-volatile memory that is used to store configuration settings and scale factors. The settings programmed into the device are not automatically saved into this non-volatile memory though. The STORE_DEFAULT_ALL command must be used to commit the current settings to non-volatile memory as device defaults. The settings that are capable of being stored in non-volatile memory are noted in their detailed descriptions. SMBALERT Interface Capability The QBDW033A0B also supports the SMBALERT response protocol. The SMBALERT response protocol is a mechanism through which the QBDW033A0B can alert the PMBus master that it has an active status or alarm condition via pulling the SMBALERT pin to an active low. The master processes this condition, and simultaneously addresses all slaves on the PMBus through the Alert Response Address. Only the slave(s) that caused the alert (and that support the protocol) acknowledges this request. The master performs a modified receive byte operation to get the slave's address. At this point, the master can use the PMBus status commands to query the slave that caused the alert. Note: The QBDW033A0B can only respond to a single address at any given time. Therefore, the factory default state for the QBDW033A0B module is to retain it's resistor programmed address, when it is in an ALERT active condition, and not respond to the ARA. This allows master systems, which do not support ARA, to continue to communicate with the slave QBDW033A0B using the programmed address, and using the various READ_STATUS commands to determine the cause for the SMBALERT. The CLEAR_FAULTS command will retire the active SMBALERT. However, when the QBDW033A0B module is used in systems that do support ARA, Bit 4 of the May 9, 2013 MFR_CPIN_ARA_CONFIG command can be used to reconfigure the module to utilize ARA. In this case, the QBDW033A0B will no longer respond to its programmed address, when in an ALERT active state. The master is expected to perform the modified received byte operation, and retire the ALERT active signal. At this time, the QBDW033A0B will return to it's resistor programmed address, allowing normal master-slave communications to proceed. The QBDW033A0B does not contain capability to arbitrate data bus contention caused by multiple modules responding to the modified received byte operation. Therefore, when the ARA is used in a multiple module PMBus application, it is necessary to have the QBDW033A0B module at the lowest programmed address in order for the host to properly determine all modules' address that are associated with an active SMBAlert. Please contact your GE sales representative for further assistance, and for more information on the SMBus alert response protocol, see the System Management Bus (SMBus) specification. PMBus Addressing The power module can be addressed through the PMBus using a device address. The module has 64 possible addresses (0 to 63 in decimal) which can be set using resistors connected from the ADDR0 and ADDR1 pins to GND. Note that some of these addresses (0 through 12, 40, 44, 45, and 55 in decimal) are reserved according to the SMBus specifications and may not be useable. The address is set in the form of two octal (0 to 7) digits, with each pin setting one digit. The ADDR1 pin sets the high order digit and ADDR0 sets the low order digit. The resistor values suggested for each digit are shown in Table 4 (1% tolerance resistors are recommended). Table 4 Digit 0 1 2 3 4 5 6 7 Resistor Value (K) 10 15.4 23.7 36.5 54.9 84.5 130 200 ADDR1 ADDR0 RADDR0 RADDR1 SIG_GND Figure 27. Circuit showing connection of resistors used to set the PMBus address of the module. The user must know which I2C addresses are reserved in a system for special functions and set the address of the module to avoid interfering with other system operations. Both 100kHz and 400kHz bus speeds are supported by the (c)2012 General Electric Company. All rights reserved. Page 16 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output module. Connection for the PMBus interface should follow the High Power DC specifications given in section 3.1.3 in the SMBus specification V2.0 for the 400kHz bus speed or the Low Power DC specifications in section 3.1.2. The complete SMBus specification is available from the SMBus web site, smbus.org. This bit is used together with the CMD, CPR and ON bits to determine startup. Bit Value 1 PMBus Data Format For commands that set or report any voltage thresholds related to output voltage (including VOUT_COMMAND, VOUT_MARGIN, POWER_GOOD and READ_VOUT), the module supports the linear data format consisting of a two byte value with a 16-bit, unsigned mantissa, and a fixed exponent of -12. The format of the two data bytes is shown below: CMD: The CMD bit controls how the device responds to the OPERATION command. Bit Value 0 1 Value = Mantissa x 2-12 For commands that set all other thresholds, voltages or report such quantities, the module supports the linear data format consisting of a two byte value with an 11-bit, two's complement mantissa and a 5-bit, two's complement exponent. The format of the two data bytes is shown below: The value is of the number is then given by Value = Mantissa x 2 Exponent PMBus Enabled On/Off The module can also be turned on and off via the PMBus interface. The OPERATION command is used to actually turn the module on and off via the PMBus, while the ON_OFF_CONFIG command configures the combination of analog ON/OFF pin input and PMBus commands needed to turn the module on and off. Bit [7] in the OPERATION command data byte enables the module, with the following functions: : : Output is disabled Output is enabled This module uses the lower five bits of the ON_OFF_CONFIG data byte to set various ON/OFF options as follows: Bit Position 4 3 2 1 0 Access r r/w r r r Function PU CMD CPR POL CPA Default Value 1 1 1 1 1 PU: Factory set to 1. QBDW033A0B requires On/Off(i) pin to be connected to proper input rail for module to power up. May 9, 2013 Action Module ignores the ON bit in the OPERATION command Module responds to the ON bit in the OPERATION command CPR: Factory set to 1. QBDW033A0B requires On/Off(i) pin to be connected to proper input rail for module to power up. This bit is used together with the CMD and ON bits to determine startup. The value of the number is then given by 0 1 Action Module does not power up until commanded by the analog ON/OFF pin and the OPERATION command as programmed in bits [2:0] of the ON_OFF_CONFIG register. Bit Value 1 Action Module requires the analog ON/OFF pin to be asserted to start the unit PMBus Adjustable Input Undervoltage Lockout The module allows adjustment of the input under voltage lockout and hysteresis. The command VIN_ON allows setting the input voltage turn on threshold, while the VIN_OFF command sets the input voltage turn off threshold. For both the VIN_ON and VIN_OFF commands, possible values range from 32.000 to 46.000V in 0.125V steps. VIN_ON must be 2.000V greater than VIN_OFF. Both the VIN_ON and VIN_OFF commands use the "Linear" format with two data bytes. The upper five bits [7:3] of the high data byte form the two's complement representation of the exponent, which is fixed at -3 (decimal). The remaining 11 bits are used for two's complement representation of the mantissa, with the 11th bit fixed at zero since only positive numbers are valid. The data associated with VIN_ON and VIN_OFF can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. PMBus Adjustable Soft Start Delay and Rise Time The soft start delay and rise time can be adjusted in the module via PMBus. The TON_DELAY command sets the delay time in ms, and allows choosing delay times between 10ms and 500ms, with resolution of 0.5ms. The TON_RISE command sets the rise time in ms, and allows choosing soft start times between 15ms and 500ms, with resolution of 0.5ms. When setting TON_RISE, make sure that the charging current for output capacitors can be delivered by the module in addition to any load current to avoid nuisance tripping of the overcurrent protection circuitry during startup. Both the TON_RISE and TON_DELAY commands use the "Linear" format with two data bytes. The upper five bits [7:3] of the high data byte form the two's complement representation of the exponent, which is fixed at -1 (decimal). The remaining 11 bits are used for two's complement representation of the mantissa, with the 11th bit fixed at zero since only positive (c)2012 General Electric Company. All rights reserved. Page 17 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output numbers are valid. The data associated with TON_RISE and TON_DELAY can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. Output Voltage Adjustment Using the PMBus The QBDW033A0B module output voltage set point is adjusted using the VOUT_COMMAND. The output voltage setting uses the Linear data format, with the 16 bits of the VOUT_COMMAND formatted as an unsigned mantissa, and a fixed exponent of -12 (decimal) (read from VOUT_MODE). VOUT = Mantissa x 2-12 The range limits for VOUT_COMMAND are 8.10V to 13.20V, and the resolution is 0.244mV. The data associated with VOUT_COMMAND can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. exponent, which is fixed at -3 (decimal). The remaining 11 bits are used for two's complement representation of the mantissa, with the 11th bit fixed at zero since only positive numbers are valid. During module manufacture, offset and gain correction values are written into the non-volatile memory of the module to null errors in the tolerance and A/D conversion of Vin. The command MFR_VIN_READ_CAL_OFFSET can be used to read the offset - two bytes consisting of a five-bit exponent (fixed at -3) and a 11-bit mantissa in two's complement format. The resolution is 125mV. The command MFR_VIN_READ_CAL_GAIN can be used to read the gain correction - two bytes consisting of a unsigned 16 bit number. The resolution of this correction factor 0.000122. The corrected input voltage reading is then given by: VIN (Read) Output Voltage Margining Using the PMBus [VIN ( A/ D) (MFR_VIN_ READ_ CAL_ GAIN/ 8192)] The QBDW033A0B module can also have its output voltage margined via PMBus commands. The command VOUT_MARGIN_HIGH sets the margin high voltage, while the command VOUT_MARGIN_LOW sets the margin low voltage. Both the VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW commands use the "Linear" mode with the exponent fixed at -12 (decimal). The data associated with VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. MFR_VIN_ READ_ CAL_ OFFSET The module is commanded to go to the margined high or low voltages using the OPERATION command. Bits [5:2] are used to enable margining as follows: 00XX : 0110 : 1010 : Margin Off Margin Low (Act on Fault) Margin High (Act on Fault) Measuring Output Voltage Using the PMBus The module can provide output voltage information using the READ_VOUT command. The command returns two bytes of data in the linear format, with the 16 bits of the READ_VOUT formatted as an unsigned mantissa, and a fixed exponent of -12 (decimal). During module manufacture, an offset correction value is written into the non-volatile memory of the module to null errors in the tolerance and A/D conversion of VOUT. The command MFR_VOUT_READ_CAL_OFFSET can be used to read the offset - two bytes consisting of a signed 16-bit mantissa in two's complement format, using a fixed exponent of -12 (decimal). The resolution is 0.244mV. The corrected Output voltage reading is then given by: VOUT (Read) [VOUT ( A / D) The module measures output current by using the output filter inductor winding resistance as a current sense element. The module can provide output current information using the READ_IOUT command. The command returns two bytes of data in the linear format. The upper five bits [7:3] of the high data byte form the two's complement representation of the exponent, which is fixed at -4 (decimal). The remaining 11 bits are used for two's complement representation of the mantissa, with the 11th bit fixed at zero since only positive numbers are valid. Output current readings are blanked below 1.65A. During module manufacture, offset and gain correction values are written into the non-volatile memory of the module to null errors in the tolerance and A/D conversion of IOUT. The command MFR_IOUT_CAL_OFFSET can be used to read the offset - two bytes consisting of a five-bit exponent (fixed at -4) and a 11-bit mantissa in two's complement format. The resolution is 62.5mA. The command MFR_IOUT_CAL_GAIN can be used to read the gain correction - two bytes consisting of a unsigned 16 bit number. The resolution of this correction factor 0.000122. The READ_IOUT command provides module average output current information. This command only supports positive current sourced from the module. If the converter is sinking current a reading of 0 is provided. I OUT (Re ad ) [ I OUT ( A / D) (MFR _ IOUT _ CAL _ GAIN / 8192)] MFR _ IOUT _ CAL _ OFFSET MFR_ VOUT _ READ_ CAL _ OFFSET Measuring Input Voltage Using the PMBus The module can provide input voltage information using the READ_VIN command. The command returns two bytes of data in the linear format. The upper five bits [7:3] of the high data byte form the two's complement representation of the May 9, 2013 Measuring Output Current Using the PMBus Note that the current reading provided by the module is corrected for temperature. Measuring the Temperature using the PMBus The module can provide temperature information using the READ_TEMPERATURE_1 command. The command returns two bytes of data in the linear format. The upper five bits [7:3] of the high data byte form the two's complement (c)2012 General Electric Company. All rights reserved. Page 18 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output representation of the exponent, which is fixed at -2 (decimal). The remaining 11 bits are used for two's complement representation of the mantissa. Note that the module's temperature sensor is located close to the module hot spot TH1 (see Thermal Considerations).and is subjected to temperatures higher than the ambient air temperature near the module. The temperature reading will be highly influenced by module load and airflow conditions. Reading the Status of the Module using the PMBus The module supports a number of status information commands implemented in PMBus. However, not all features are supported in these commands. A X in the FLAG cell indicates the bit is not supported. STATUS_WORD : Returns two bytes of information with a summary of the module's fault/warning conditions. High Byte Bit Position Flag Default Value 15 VOUT fault 0 14 IOUT fault or warning 0 13 Input Voltage fault 0 12 X 0 11 POWER_GOOD# (is negated) 0 10 X 0 9 X 0 8 X 0 Bit Position 7 6 5 4 3 2 1 0 Low Byte Flag X OFF VOUT Overvoltage IOUT Overcurrent VIN Undervoltage Temperature CML (Comm. Memory Fault) X Default Value 0 0 0 0 0 0 0 0 STATUS_VOUT : Returns one byte of information relating to the status of the module's output voltage related faults. Bit Position Flag Default Value 7 VOUT OV Fault 0 6 X 0 5 X 0 4 X 0 3 X 0 2 X 0 1 X 0 0 X 0 May 9, 2013 STATUS_IOUT : Returns one byte of information relating to the status of the module's output currentrelated faults. Bit Position Flag Default Value 7 IOUT OC Fault 0 6 X 0 5 IOUT OC Warning 0 4 X 0 3 X 0 2 X 0 1 X 0 0 X 0 STATUS_INPUT : Returns one byte of information relating to the status of the module's input voltage related faults. Bit Position Flag Default Value 7 VIN OV Fault 0 6 X 0 5 X 0 4 VIN UV Fault 0 3 Module Off (Low VIN) 0 2 X 0 1 X 0 0 X 0 STATUS_TEMPERATURE : Returns one byte of information relating to the status of the module's temperature related faults. Bit Position Flag Default Value 7 OT Fault 0 6 OT Warning 0 5 X 0 4 X 0 3 X 0 2 X 0 1 X 0 0 X 0 STATUS_CML : Returns one byte of information relating to the status of the module's communication related faults. Bit Position Flag Default Value Invalid/Unsupported 7 0 Command 6 Invalid/Unsupported Data 0 5 Packet Error Check Failed 0 4 X 0 3 X 0 2 X 0 1 X 0 0 X 0 (c)2012 General Electric Company. All rights reserved. Page 19 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Summary of Supported PMBus Commands This section outlines the PMBus command support for the QBDW033A0B bus converters. Each supported command is outlined in order of increasing command codes with a quick reference table of all supported commands included at the end of the section. Each command will have the following basic information. Command Name [Code] Command support Data format Factory default Additional information may be provided in tabular form or other format, if necessary. OPERATION [0x01] Command support: On/Off Immediate and Margins (Act on Fault). Soft off with sequencing not supported and Margins (Ignore Fault) not supported. Therefore bits 6, 3, 2, 1 and 0 set as read only at factory defaults. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/w r r/w r/w r r r r Function ON/OFF Bits[5:4] Bits[3:2] N/A Default Value 1 0 0 0 1 0 0 0 ON_OFF_CONFIG [0x02] Command support: Bit 1 polarity will be set based upon module code [0=Negative on/off logic, 1=positive on/off logic to allow customer system to know hardware on/off logic Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r/w r r Function (reserved) Bit 4 pu Bit 3 cmd Bit 2 cpr Bit 1 pol Bit 0 cpa module Default Value 0 0 0 1 1 1 1 code CLEAR_FAULTS [0x03] Command support: All functionality STORE_DEFAULT_ALL[0x11] Command support: All functionality - Stores operating parameters to EEprom memory. Command requires 500ms to execute. Delay any additional commands to module for sufficient time to complete execution. RESTORE_DEFAULT_ALL[0x12] Command support: All functionality - Restores operating parameters from EEprom memory. Command requires 200ms to execute. Delay any additional commands to module for sufficient time to complete execution. VOUT_MODE[0x20] Command support: Supported. Factory default: 0x14 - indicates linear mode with exp = -12 Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 Access r r r r r r r Function Mode (linear) 2's complement exponent Default Value 0 0 0 1 0 1 0 0 r 0 VOUT_COMMAND [0x21] Data format: 16 bit unsigned mantissa (implied exponent per VOUT_MODE) Factory default: 12.000V ( 12.00 / 2-12 49,152 = 0xC000 ) Range limits (max/min): 13.200V/8.100V Units: volt Command support: Supported VOUT_CAL_OFFSET [0x23] Range limits (max/min): +0.25/-0.25 Units: volt Command support: read/write support, lockout per MFR_DEVICE_TYPE, functionality implemented May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 20 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output VOUT_MARGIN_HIGH [0x25] Range limits (max/min): 13.2/8.1 Units: volt Command support: read/write support, full functionality except "Ignore faults". Note: Range cross-check - value must be greater than VOUT_MARGIN_LOW value. VOUT_MARGIN_LOW [0x26] Range limits (max/min): 13.2/8.1 Units: volt Command support: read/write support, full functionality except "Ignore faults". Note: Range cross-check - value must be less than VOUT_MARGIN_HIGH value. VOUT_DROOP [0x28] Factory default: 0 (No droop); 15 (Parallel operation) Range limits (max/min): 50/0 Units: mv/A Command support: All functionality VIN_ON [0x35] Range limits (max/min): 46/32 Units: volt Command support: All functionality Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF level to be higher than and ON level VIN_OFF [0x36] Range limits (max/min): 46/32 Units: volt Command support: All functionality Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF level to be higher than and ON level VOUT_OV_FAULT_LIMIT [0x40] Range limits (max/min): 15.99/10.9 (See note 2) Units: volt Command support: All functionality Note: 1. Range cross- check - value must be greater than VOUT_COMMAND value. 2. The maximum OV Fault Limit equals the output set point plus 3V, up to 15.99V. This is an automatic module protection feature that will override a user-set fault limit if the user limit is set too high. VOUT_OV_FAULT_RESPONSE [0x41] Command support: Response settings (bits RSP0:1) - only a setting of 10, unit shuts down and responds according to the retry settings below, is supported. Retry settings (bits RS0:2) - only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. Delay time setting (bits 0-2) - only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the VOUT_OV_FAULT_RESPONSE command are; The unit shuts down in response to a VOUT over voltage condition. The unit will continuously restart (normal startup) while the VOUT over voltage condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 0 1 1 1 0 0 0 May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 21 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output IOUT_OC_FAULT_LIMIT [0x46] Range limits (max/min): 60/20 Units: amp Command support: All functionality Note: Range cross-check - value must be greater than IOUT_OC_WARN_LIMIT value. IOUT_OC_FAULT_RESPONSE [0x47] Command support: Response settings (bits RSP0:1) - only settings of 11, unit shuts down and responds according to the retry settings below, is supported. Retry settings (bits RS0:2) - only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. Delay time setting (bits 0-2) - only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the IOUT_OC_FAULT_RESPONSE command are; The unit shuts down in response to an IOUT over current condition. The unit will continuously restart (normal startup) while the IOUT over current condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 1 1 1 1 0 0 0 IOUT_OC_WARN_LIMIT [0x4A] Range limits (max/min): 40/10 Units: amp Command support: read/write support, functionality complete Note: Range cross-check - value must be less than IOUT_OC_FAULT_LIMIT value. OT_FAULT_LIMIT [0x4F] Range limits (max/min): 140/25 Units: degrees C. Command support: All functionality Note: Range cross-check - value must be greater than OT_WARN_LIMIT value. OT_FAULT_RESPONSE [0x50] Command support: Response settings (bits RSP0:1) - only setting of 10, unit shuts down and responds according to the retry settings below. Retry settings (bits RS0:2) - only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. Delay time setting (bits 0-2) - only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the OT_FAULT_RESPONSE command are; The unit shuts down in response to an over-temperature condition. The unit will continuously restart (normal startup) while the over-temperature condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 0 1 1 1 0 0 0 May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 22 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output OT_WARN_LIMIT [0x51] Range limits (max/min): 125/25 Units: degrees C. Command support: All functionality Note: Range cross-check - value must be less than OT_FAULT_LIMIT value. VIN_OV_FAULT_LIMIT [0x55] Range limits (max/min): 90/48 Units: volt Command support: All functionality VIN_OV_FAULT_RESPONSE [0x56] Command support: Response settings (bits RSP0:1) - only settings of 11 (The device's output is disabled while the fault is present.) is supported.. Retry settings (bits RS0:2) - only settings of 000 (unit does not attempt to restart on fault. Delay time setting (bits 0-2) - only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the VIN_OV_FAULT_RESPONSE command are; The unit shuts down in response to a VIN over voltage condition. The unit will continuously prepares to restart (normal startup) while the VIN over voltage condition is present until it is commanded off, bias power is removed, the VIN over voltage condition is removed, or another fault condition causes the unit to shutdown. The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 1 0 0 0 0 0 0 POWER_GOOD_ON [0x5E] Range limits (max/min): 13.2/8.1 Units: volt Command support: full support Note: Range cross-check - value must be greater than POWER_GOOD_OFF value by 1.6V. POWER_GOOD_OFF [0x5F] Range limits (max/min): 13.2/8.1 Units: volt Command support: full support Note: Range cross-check - value must be less than POWER_GOOD_ON value by 1.6V. TON_DELAY [0x60] Range limits (max/min): 500/10 Units: milliseconds Command support: full support TON_RISE [0x61] Range limits (max/min): 500/15 Units: milliseconds Command support: full support May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 23 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output STATUS_WORD [0x79] Command support: full implementation for supported functions (note: Fans, MFR_SPECIFIC, Unknown not supported) Format 8 bit unsigned (bit field) Bit Position 15 14 13 12 11 10 9 Access r r r r r r r Function Format Bit Position Access Function VOUT I/POUT 8 bit unsigned (bit field) 7 6 r r OUTPUT BUSY1 _OFF INPUT MFR_SPEC1 5 r VOUT_OV _FAULT 4 r #PWR_ GOOD IOUT_OC _FAULT 3 r VIN_UV _FAULT FANS1 OTHER1 2 r 1 r TEMP CML 8 r UN KNOWN1 0 r NONE OF ABOVE1 (1) Not supported STATUS_VOUT [0x7A] Command support: VOUT_OV_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 Access r/reset(1) r/ reset r/ reset r/ reset Function (1) VOUT_OV _FAULT VOUT_OV _WARN1 VOUT_UV _WARN1 VOUT_UV _FAULT1 3 r/ reset VOUT_ MAX _WARN1 2 r/ reset TON_ MAX_ FAULT1 3 r/ reset 2 r/ reset In Power Limiting Mode1 1 r/ reset TOFF_ MAX_ WARN1 0 r/ reset VOUT TRACKING ERROR1 Not supported STATUS_IOUT [0x7B] Command support: IOUT_OC_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 Access r/ reset(1) r/ reset r/ reset r/ reset Function IOUT_OC IOUT_OC _LV IOUT_OC IOUT_UC _FAULT _FAULT1 _WARN _FAULT1 (1) Current Share Fault1 1 r/ reset 0 r/ reset POUT_OP _FAULT1 POUT_OP _WARN1 2 r/ reset 1 r/ reset 0 r/ reset IIN_OC _FAULT1 IIN_OC _WARN1 PIN_OP _WARN1 2 r/ reset reserved 1 r/ reset reserved 0 r/ reset reserved Not supported STATUS_INPUT [0x7C] Command support: VIN_OV_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 Access r/ reset(1) r/ reset r/ reset r/ reset Function (1) VIN_OV _FAULT VIN_OV _WARN1 VIN_UV _WARN1 VIN_UV _FAULT 3 r/ reset Unit Off (low input voltage) Not supported STATUS_TEMPERATURE [0x7D] Command support: OT_WARN, OT_FAULT supported, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 Access r/ reset(1) r/ reset r/ reset r/ reset Function OT_ FAULT OT_ WARN UT_ WARN1 UT_ FAULT1 (1) Not supported May 9, 2013 3 r/ reset reserved (c)2012 General Electric Company. All rights reserved. Page 24 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output STATUS_CML [0x7E] Command support: PEC_FAULT, INVALID_DATA, INVALID_CMD supported, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 Access r/ reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset INVALID CMD Function (1) INVALID DATA PROC FAULT1 MEMORY FAULT1 PEC FAILED 1 r/ reset COM FAULT (other)1 reserved 0 r/ reset Memory/ Logic fault (other)1 Not supported READ_VIN [0x88] Command support: full support READ_VOUT [0x8B] Command support: full support READ_IOUT [0x8C] Command support: full support READ_TEMPERATURE_1 [0x8D] Command support: full support MFR_DEVICE_TYPE [0xD0] Command support: partial support in place (Mod Name) Format Unsigned Binary Bit Pos. 7 6 5 4 3 2 Access r/w r/w r/w r/w r/w r Function Reserved Default 0 0 0 0 0 0 Byte High Byte Bit 7:0 7:2 Description Reserved Module Name1 1 r 0 r 7 r/w 6 r/w 0 0 1 0 5 4 r/w r/w Module Name 0 0 Value 3 r/w 2 r/w 0 0 1 r/w WPE 1 0 r/w Res 0 Meaning 1xxxxx Module Name 0 Write Protect Enable not active. Low Byte 1 WPE 1 Write Protect Enable active. 0 Reserved 0 Reserved 1. Present module designations (Non-isolated units will have a 0XXXXX format) a. QBDW033A0B4xxx: 100000 b. QBDW025A0B4xxx: 100001 c. EBDW025A0B4xxx: 100010 d. EBDW020A0B4xxx: 100011 MFR_VOUT_READ_CAL_GAIN [0xD1] Factory default: 0x2000 Range limits (max/min): 0x2666/0x1999 Units: N/A Command support: support for VOUT gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_VOUT_READ_CAL_OFFSET [0xD2] Range limits (max/min): exp must = -12 Units: N/A Command support: support for VOUT offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_VIN_READ_CAL_GAIN [0xD3] Factory default: 0X2000 Range limits (max/min): 0x2666/0x1999 Command support: support for VIN gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 25 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output MFR_VIN_READ_CAL_OFFSET [0xD4] Data format: VIN linear format Range limits (max/min): exp must = -3 Units: N/A Command support: support for VIN offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_IOUT_CAL_GAIN [0xD6] Range limits (max/min): 0x2666/0x1999 Units: N/A Command support: support for IOUT gain calibration, lockout per MFR_DEVICE_TYPE MFR_IOUT_CAL_OFFSET [0xD7] Range limits (max/min): exp must = -4 Units: N/A Command support: support for IOUT offset calibration, lockout per MFR_DEVICE_TYPE MFR_FW_REV [0xDB] Range limits (max/min): 0 - 0xff (0.00 - 15.15) Units: N/A Command support: full read support MFR_C1_C2_ARA_CONFIG [0xE0] Command Code Command support: Full support. Command Format Bit Position Access Function Default Value MFR_C1_C2_ARA_CONFIG 8 bit unsigned (bit field) 7 6 r r Reserved 0 0 Bit 7:5 Description Reserved 4 ARA Value 000 0 1 0000 3:0 PIN Configuration* 0001 0010 5 r 0 4 r/w ARA 0 3 r/w 0 2 1 r/w r/w Assignment Table 0 0 0 r/w 0 Meaning Reserved ARA not functional, module remains at resistor programmed address when SMBLAERT is asserted ARA functional, module responds to ARA only, when SMBLAERT is asserted T/C1 pin: ON/OFF (Secondary) C2 pin: POWER_GOOD T/C1 pin: TRIM C2 pin: POWER_GOOD T/C1 pin: TRIM C2 pin: ON/OFF (Secondary) * All QBDW without -P option Bit Description Value 7:5 Reserved 000 4 ARA 0 1 PIN 3:0 Configuration** ** All QBDW with -P option May 9, 2013 0000 Meaning Reserved ARA not functional, module remains at resistor programmed address when SMBLAERT is asserted ARA functional, module responds to ARA only, when SMBLAERT is asserted T/C1 pin: ON/OFF (Secondary) C2 pin: POWER_GOOD (c)2012 General Electric Company. All rights reserved. Page 26 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output MFR_ C2_LOGIC [0xE1] Command Code Command support: full support (bits 0 and 1) as follows: Command Format Bit Position Access Function Default Value MFR_C2_LOGIC 8 bit unsigned (bit field) 7 6 5 4 r r r r Reserved 0 0 0 0 3 r 2 r 0 0 1 r/ w On/Off(primary & secondary) combination 0 Bit Description Value 7:2 Reserved 000000 1 ON/OFF Configuration 0 Secondary side on/off pin state when mapped to either T/C1 or C2 is ignored 1 AND - Primary and Secondary side on/off 0 Secondary Side ON/OFF Logic 0 r/ w logic 0 Meaning Reserved 0 Negative Logic (Low Enable: Input < 0.8V wrt Vout(-) 1 Positive Logic (High Enable: Input > 2.0V wrt Vout(-) MFR_PGOOD_POLARITY [0xE2] Command support: full support (bit 0) as follows: Bit 0: 0 = Negative PGOOD logic (module PGOOD asserted when pin is LO, PGOOD de-asserted when pin is HI) 1 = Positive PGOOD logic (module PGOOD de-asserted when pin is LO, PGOOD asserted when pin is HI) Command Format Bit Position Access Function Default Value MFR_PGOOD_POLARITY 8 bit unsigned (bit field) 7 6 r r 0 0 5 r 0 4 r Reserved 0 3 r 2 r 1 r 0 0 0 0 r/w logic 1 MFR_MODULE_DATE_LOC_SN [0xF0] Command support: read/write support for 12 byte block, lockout per MFR_DEVICE_TYPE May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 27 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output PMBus Command Quick Reference Table OPERATION CMD CODE 0x01 DATA BYTES 1 ON_OFF_CONFIG 0x02 1 CLEAR_FAULTS STORE_DEFAULT_ALL RESTORE_DEFAULT_ALL VOUT_MODE VOUT_COMMAND VOUT_CAL_OFFSET VOUT_MARGIN_HIGH VOUT_MARGIN_LOW VOUT_DROOP VIN_ON VIN_OFF VOUT_OV_FAULT_LIMIT VOUT_OV_FAULT_RESPONSE IOUT_OC_FAULT_LIMIT IOUT_OC_FAULT_RESPONSE IOUT_OC_WARN_LIMIT OT_FAULT_LIMIT OT_FAULT_RESPONSE OT_WARN_LIMIT VIN_OV_FAULT_LIMIT VIN_OV_FAULT_RESPONSE POWER_GOOD_ON POWER_GOOD_OFF TON_DELAY TON_RISE STATUS_WORD STATUS_VOUT STATUS_IOUT STATUS_INPUT STATUS_TEMPERATURE STATUS_CML READ_VIN READ_VOUT READ_IOUT READ_TEMP1 PMBUS_REVISION MFR_DEVICE_TYPE MFR_VOUT_READ_CAL_GAIN MFR_VOUT_READ_CAL_OFF MFR_VIN_READ_CAL_GAIN MFR_VIN_READ_CAL_OFF MFR_IOUT_CAL_GAIN MFR_IOUT_CAL_OFFSET MFR_FW_REV MFR_C1_C2_ARA_CONFIG MFR_ C2_LOGIC MFR_PGOOD _POLARITY MFR_MOD_DATE_LOC_SN 0x03 0x11 0x12 0x20 0x21 0x23 0x25 0x26 0x28 0x35 0x36 0x40 0x41 0x46 0x47 0x4A 0x4F 0x50 0x51 0x55 0x56 0x5E 0x5F 0x60 0x61 0x79 0x7A 0x7B 0x7C 0x7D 0x7E 0x88 0x8B 0x8C 0x8D 0x98 0xD0 0xD1 0xD2 0xD3 0xD4 0xD6 0xD7 0xDB 0xE0 0xE1 0xE2 0xF0 0 0 0 1 2 2 2 2 2 2 2 2 1 2 1 2 2 1 2 2 1 2 2 2 2 2 1 1 1 1 1 2 2 2 2 1 2 2 2 2 2 2 2 2 1 1 1 12 PMBUS CMD Bit field DATA UNITS N/A TRANSFER TYPE R/W byte Bit field N/A R/W byte N/A N/A N/A mode + exp VOUT linear VOUT linear VOUT linear VOUT linear VOUT linear VIN linear VIN linear VOUT linear Bit field IOUT linear Bit field IOUT linear TEMP linear Bit field TEMP linear VIN linear Bit field VOUT linear VOUT linear Time linear Time linear Bit field Bit field Bit field Bit field Bit field Bit field VIN linear VOUT linear IOUT linear TEMP linear Bit Field Custom 16 bit unsigned VOUT linear 16 bit unsigned VIN linear 16 bit unsigned IOUT linear 8 bit unsigned Bit field Bit field Bit field 8 bit char N/A N/A N/A N/A Volts Volts Volts Volts mV/A v v v N/A Amps N/A Amps Deg. C N/A Deg. C v N/A v V msec msec N/A N/A N/A N/A N/A N/A v v Amps Deg. C n/a N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Send byte Send byte Send byte Read byte R/W word R/W word R/W word R/W word R/W word R/W word R/W word R/W word R/W byte R/W word R/W byte R/W word R/W word R/W byte R/W word R/W word R/W byte R/W word R/W word R/W word R/W word Read word Read byte Read byte Read byte Read byte Read byte Read word Read word Read word Read word Read byte R/W word R/W word R/W word R/W word R/W word R/W word R/W word Read byte R/W byte R/W byte R/W byte R/W block DATA FORMAT DEFAULT VALUE 0x80 0x1D (Neg Logic) 0x1F (Pos Logic) none none none 0x14 12.000V MS 12.600V 11.400V 0 35.000V 33.000V 15.000V 0xB8 40.000A 0xF8 36.000A 140C 0xB8 125C 85V 0xC0 10.100V 8.500V 10ms 15ms N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.2 0x0082 0x2000 MS MS MS MS MS 0xMj.Mn.Bh.Bl 0x00 0x00 0x01 YYLLWW123456 MS=Module specific May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 28 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBDW033A0B Through-hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.] *Top side label includes GE name, product designation, and data code. ** Standard pin tail length. Optional pin tail lengths shown in Table 2, Device Options. TOP VIEW* SIDE VIEW BOTTOM VIEW Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 May 9, 2013 Pin Name VIN(+) ON/OFF VIN(-) VOUT(-) SENSE(-) TRIM/C1 SENSE(+) VOUT(+) C2 SIG_GND DATA SMBALERT CLK ADDR1 ADDR0 (c)2012 General Electric Company. All rights reserved. Page 29 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBDW033A0B-H (Baseplate version) Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.] *Side label includes product designation, and data code. ** Standard pin tail length. Optional pin tail lengths shown in Table 2, Device Options. ***Bottom label includes GE name, product designation, and data code TOP VIEW SIDE VIEW* BOTTOM VIEW*** Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pin Name VIN(+) ON/OFF VIN(-) VOUT(-) SENSE(-) TRIM/C1 SENSE(+) VOUT(+) C2 SIG_GND DATA SMBALERT CLK ADDR1 ADDR0 May 9, 2013 (c)2012 General Electric Company. All rights reserved. Page 30 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Recommended Pad Layouts Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.[ (unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.] Through-Hole Modules Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pin Name VIN(+) ON/OFF VIN(-) VOUT(-) SENSE(-) TRIM/C1 SENSE(+) VOUT(+) C2 SIG_GND DATA SMBALERT CLK ADDR1 ADDR0 Hole and Pad diameter recommendations: Pin Number Hole Dia mm [in] 1, 2, 3, 5, 6, 7 1.6 [.063] 4, 8 2.2 [.087] 9, 10, 11, 12, 13, 14, 15 1.0 [.039] May 9, 2013 Pad Dia mm [in] 2.1 [.083] 3.2 [.126] 1.5 [.059] (c)2012 General Electric Company. All rights reserved. Page 31 GE Data Sheet QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 1. Device Codes Product codes QBDW033A0B41Z QBDW033A0B641Z QBDW033A0B41-HZ QBDW033A0B41-PHZ QBDW033A0B641-HZ QBDW033A0B641-PHZ Input Voltage 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) Output Voltage 12V 12V 12V 12V 12V 12V Output Current 33A 33A 33A 33A 33A 33A Efficiency 95.3% 95.3% 95.3% 95.3% 95.3% 95.3% Connector Type Through hole Through hole Through hole Through hole Through hole Through hole Comcodes CC109159307 CC109168885 CC109163300 CC109158903 CC109170172 CC109170503 Table 2. Device Options Contact Us For more information, call us at USA/Canada: +1 888 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 India: +91.80.28411633 www.ge.com/powerelectronics May 9, 2013 (c)2012 General Electric Company. All rights reserved. Version 1.41